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  • Page Load Time - "Waiting on..." taking ages. What part of page request process is hung?

    - by James
    I have a new cluster site running on Magento that's on a development server that is made up of 2 x web servers and 1 x database server. I have optimized the site in all areas I know (gzip, increasing php memory limits, increasing database memory limits etc) but sometimes the page loading gets stuck on 'waiting for xxx.xx.xx.xxx' (Chrome and other broswers, chrome just shows it that way). It can sit there for 40 + seconds, sometimes it just never loads and I close it in frustration. What part of the page loading process is this hung at? Is it a server issue, database issue, platform issue? I need to know where to start or whether to push the hosting provider about it.

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  • GNOME session not starting after filesystem corruption

    - by user3215
    I'm running Ubuntu 9.10 desktop edition. Suddenly today /home became corrupted and I was prompted to run fsck manually. I ran fsck -y /home and rebooted the system. The system booted but I got no GUI interface (GNOME session) but a black screen with a user prompt instead. Any tricks here to start my system normally? Any help is greatly appreciated. EDIT:1 The error were similar to the the following(may be with some mistakes as I had to type it manually): machine1 login: root password: at login Sun Jan 16 15:30:46 IST 2011 on tty1 EXT3-fs error (devie sda1): ext3_lookup :deleted inode referenced aborting journal on device sda1 Remounting filesystem read-only root@machine1:~# startx ktemp: failed to create file via template `/tmp/serverauth.xxxxxxxxxxx: Read-only file /usr/bin/startx: line 157: cannot create temp file for here-document: Read-only file xauth: error in locking authority file /root/.Xauthority /usr/bin/startx: line 173: cannnot create temp file for here-document: Read-only file xauth: error in locking authority file /root/.Xauthority /usr/bin/startx: line 173: cannnot create temp file for here-document: Read-only file X: cannot stat /tmp/.x11-unix (No such file or directory), aborting giving up. xinit: No such file or directory (errno 2): unable to connect to xserver xinit: No such process (errno 3): Server error xauth: error in locking authority file /root/.Xauthority

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  • 100% CPU Runaway Processes (NCurses?)

    - by BCable
    This is a problem I've had for years, but just haven't posted anywhere about it until now. I'm running GRML, a Debian squeeze based Linux distro, and occasionally certain processes will runaway and cause 100% CPU usage. The only way I can usually know is when my thermal meter on my statusbar will turn yellow. Sometimes I run fullscreen applications when it happens, though, so I sometimes don't catch it, leaving my computer wasting away at my CPU. The processes that I can think of off the top of my head are these: abook, aumix, hnb, wyrd. They are all NCurses based console applications, and there are others that are also NCurses based. Is there a bug in NCurses somewhere that I need patched or something? This also happened on the same distro with the same applications on a different laptop with the same configurations. Any ideas? Thanks!

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  • typesetting system

    - by itun
    All my life I used Microsoft Office on Windows for document writing and then Libre(Open)Office on Linux. This is not a bad software, but not perfect and I have some complaints. Now on my usual desktop I have Linux. I heard from people who work a lot with documents of different type and complexity (diagrams, articles, document design, presentation) that latex is a perfect thing. I have spent two days exploring Latex and my opinion as a beginner that it is out-of-date (the concepts of Latex language). The language is not intuitive and sometimes even complex. Can somebody advise another software product for document writing?

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  • SQL Injection – Beyond the Basics - A good article

    - by TATWORTH
    At http://www.sqlmag.com/content1/topic/sql-injection-basics-142364/catpath/sql-server/utm_source/feedburner/utm_medium/feed, there is an excellent article on the measures needed to defeat SQL Injection Attack. Read the article but also remember that the account the application uses to access the database adhere to the following points:NEVER EVER use the sa account even in development.Route access via a role on the database.The account should have the minimum privilege required for the job.The account should have no access whatsoever to any other database not required by the application.If you can avoid mixed mode authentication do so and grant access via to a windows group to which you add users.

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  • PerlRegEx vs RegularExpressionsCore Delphi Units

    - by Jan Goyvaerts
    The RegularExpressionsCore unit that is part of Delphi XE is based on the latest class-based PerlRegEx unit that I developed. Embarcadero only made a few changes to the unit. These changes are insignificant enough that code written for earlier versions of Delphi using the class-based PerlRegEx unit will work just the same with Delphi XE. The unit was renamed from PerlRegEx to RegularExpressionsCore. When migrating your code to Delphi XE, you can choose whether you want to use the new RegularExpressionsCore unit or continue using the PerlRegEx unit in your application. All you need to change is which unit you add to the uses clause in your own units. Indentation and line breaks in the code were changed to match the style used in the Delphi RTL and VCL code. This does not change the code, but makes it harder to diff the two units. Literal strings in the unit were separated into their own unit called RegularExpressionsConsts. These strings are only used for error messages that indicate bugs in your code. If your code uses TPerlRegEx correctly then the user should not see any of these strings. My code uses assertions to check for out of bounds parameters, while Embarcadero uses exceptions. Again, if you use TPerlRegEx correctly, you should never get any assertions or exceptions. The Compile method raises an exception if the regular expression is invalid in both my original TPerlRegEx component and Embarcadero’s version. If your code allows the user to provide the regular expression, you should explicitly call Compile and catch any exceptions it raises so you can tell the user there is a problem with the regular expression. Even with user-provided regular expressions, you shouldn’t get any other assertions or exceptions if your code is correct. Note that Embarcadero owns all the rights to their RegularExpressionsCore unit. Like all the other RTL and VCL units, this unit cannot be distributed by myself or anyone other than Embarcadero. I do retain the rights to my original PerlRegEx unit which I will continue to make available for those using older versions of Delphi.

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  • Increase the compression performance of VPN

    - by Martin
    I am currently switching from a system with HPN-SSH tunnels and enabled compression to something VPN based. I have tried tinc and n2n so far, hamachi requires a library I do not have. In my primitive benchmarks I am not satisfied with the achievable bandwidth compared to the SSH tunnels. In tinc the low LZO setting performed best, but compression is only available in UDP mode. Ideally I would like to have a TCP-based VPN with a multi-threaded compression. Can you suggest me some ideas how to increase the performance? Would it be possible to somehow put a compression filter in front of the tun interface? Or are there any VPN implementations that might be better suited for my needs (fast compression, TCP-based, switch mode, does not have to be super-secure)? I would consider tunnelling Ethernet over SSH, but according to some articles it is not advisable.

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  • Efficient way to check for changes to the contents of folders

    - by MrVimes
    I am creating an application that maintains a database of files of a certain type in a given folder (and all subfolders) Initially the program will recurse the folders and add any file it finds of that type to the database. I want the application to have the ability to re-scan the folder and add any files that were not there the last time the folders were scanned. It can't use the date created property of the file because there is a high chance of a file being added to the folders that isn't a new file. I am wondering what the most efficient way of doing this is, and if there is a way that doesn't involve checking each file is in the database already (which, if there are 5000 files would mean 5000 queries of a list 5000 items in size, or 25 million 'checks' for the sql engine to perform) I suppose a more specific question to acheive the same goal would be - is there a property of a file (in Microsoft Windows) that will reliably tell you when that file arrived in that folder.

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  • How to register a .cn domain

    - by user359650
    I would like to register a .cn domain. I found the below pages which list the officially accredited registrars: -based in China: http://www.cnnic.net.cn/html/Dir/2007/06/05/4635.htm -based outside China: http://www.cnnic.net.cn/html/Dir/2007/06/25/4671.htm Needless to say that the registrars based in China have their website in Chinese which effectively prevents me from using them. There are 11 oversea registrars and I'm wondering which one I should be using. If you look at the big names, they all have their .cn registered (facebook.cn, microsoft.cn...), and whois only shows a Sponsering registrar which doesn't seem to be offering domains registration services directly to consumers: $ whois facebook.cn Domain Name: facebook.cn ROID: 20050304s10001s04039518-cn Domain Status: ok Registrant ID: tuv3ldreit6px8c7 Registrant Organization: Facebook Inc. Registrant Name: Facebook, Inc. Registrant Email: [email protected] Sponsoring Registrar: Tucows, Inc. http://www.tucowsdomains.com/ only seems to offer domain-related help but not registration. $ whois microsoft.cn Domain Name: microsoft.cn ROID: 20030312s10001s00043473-cn Domain Status: clientDeleteProhibited Domain Status: clientUpdateProhibited Domain Status: clientTransferProhibited Registrant ID: mmr-44297 Registrant Organization: Microsoft Corporation Registrant Name: Domain Administrator Registrant Email: [email protected] Sponsoring Registrar: MarkMonitor, Inc. https://www.markmonitor.com/ seems to offer registration but only to "big" customers, and definitely not to consumers like me via a web portal. Q: How do big companies register their .cn domains? How consumers like us should do it?

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  • How to fore Word to recompute image numbers?

    - by Vojtech Ruzicka
    I have a word document containing images and tables. These have captions which are numbered, like "Image 1-Example of something". Later on I decided to rearrange some of chapters of my document. However numbering of objects remained the same, so the first image is image 8, the second is image 3, etc. I want to force Word to recompute image numbering so first image in document would be image 1, the second - image 2, etc. Is that possible? Will references (added through cross reference feature) to those objects be updated?

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  • A New Native Silverlight 4 Rich Text Editor Coming Up

    The eagerly awaited release of Silverlight 4.0 is now a fact and we have great news to share with you. Here at Telerik we are going to have a new addition to our Silverlight suite a brand new native Silverlight 4.0 rich text box. RadRichTextBox offers MS Word-like text editing and formatting capabilities which come with unmatched performance, paged and flow layout. The new control utilizes UI Virtualization and Recycling, easy to use API for accessing/modifying document and layout structure, and more. A CTP of RadRichTextBox is going to be released with the upcoming RadControls for Silverlight 2010.Q1 SP1. The official version is expected to be part of the Q2 2010 release. To illustrate better some of the new features lets see a short example of the document model in pure XAML: As we said above, the structure of the document is like the documents in WPF. In the ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Restricting permissions to individual documents on SharePoint

    - by wahle509
    Here's what I'm trying to do: I would like to create a list of documents on a site in my company's SharePoint site. Each document should have specific user's permissions to view and edit it. For example: The list is for performance reports. John has his out there called "John_PR_09.docx". Only him and his supervisor should have permissions to view, edit, or do anything to it. And then another employee has hers out there with permissions for only her and her supervisor, and so on... I have tested this out with a document that I removed the groups and users from (since they inherit permissions from it's parent) and only gave my user account permissions to. I then asked someone else to try and open and she could, she even wrote "TEST" on the document and saved it. What am I doing wrong? I thought I stopped it from inheriting permissions from it's parent and only gave myself rights to edit it.

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  • Opensource package for securly allowing users to log in and provide information

    - by JTS
    I have a site written in mostly php and html. I also have a sql database of personal information like names and addresses. I would like my users to be able to log in to my website with a login I can email or snail mail to them, and view and edit their information on my database. Users can currently enter information online I and store it in my database but they can't view or edit stored information. I can add the code to do this, but when I give users the ability to view information I suddenly have a lot more security concerns. Is there an open source package to deal with allowing users to do something like this? Or is there an established convention for this? I know this is a pretty basic question, and there might be some good literature about it that I have yet to find, so if someone can just point me in the direction of some of that information, or better yet give me firsthand some information about this that would be great.

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  • Advanced Analytics Oracle Data Mining - NEW 2-Day Training Course

    - by Mike.Hallett(at)Oracle-BI&EPM
    A NEW 2-Day Oracle University (OU) Instructor Led Course on Oracle Data Mining has been developed for partners and customers to learn more about data mining, predictive analytics and knowledge discovery inside the Oracle Database. Oracle Data Mining, provides data mining algorithms that run native for high performance in-database model building and model deployment. This OU course is a great way to learn the advantages and benefits of "big data analytics"; mining data, building and deploying "predictive analytics" all inside the Oracle Database and to work with OBI. To register for a class, click here, then click on View Schedule to see the latest scheduled classes and/or submit your information expressing interest in attending a class.

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  • Tools for game script / storyboard

    - by Pietro Polsinelli
    I am searching for a tool that will help in writing a game script. By "script" I mean the text core of a storyboard - without the drawing drafts, which may or may not be there (yet). What I'm thinking of will let write a piece of text of the script, define a simplified workflow from that step, and then define the text of next steps, and so on. Searching online, I found Inform http://inform7.com/ ("A Design System for Interactive Fiction Based on Natural Language") which in theory is exactly what I am searching for, but trying to use it it has this model of a space (a dungeon, a library) where you are picking up objects and exploring them. In my case I am designing more a Sims like game, the flow is entirely different. Considering non specific software, mind mapping tools miss the linearity of the process. What I am writing is a directed graph - simply a work-flow, but the way I want to design it is more text based than work-flow based. SO what I'm doing now is using a text editor, which I'll transform directly in code. Any suggestions?

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  • New Exadata and Exalogic public references

    - by Javier Puerta
    The following are new public references for Exadata and Exalogic: Allegis Accelerates HR Processing for 130,000 Contractors  Oracle customer, Allegis, describes how Oracle Exadata and Oracle Exalogic helped consolidate and optimize critical processes running in Oracle's PeopleSoft.  Hyundai Motor Company Document Cuts Repository Management and Access Times Approximately 85%, Saves More Than US$1 Million in Yearly Printing and Paper Costs The company implemented Oracle Exalogic Elastic Cloud, Oracle Exadata Database Machine, Oracle WebLogic, and Oracle WebCenter Content 11g to ensure high performance and stability for its new document-centralization system  University of Minnesota Reduces Data Center Footprint while Enhancing Performance and Manageability with Oracle Exadata Database Machine   Leading Research Institution Consolidates More Than 200 Databases to Approximately 20 while Maximizing Availability for Thousands of Users SThree Prepares to Triple in Size with a Cloud-Based Architecture and a Consolidated, Stable, and Scalable Global Platform  By consolidating 68 databases into a single Oracle Exadata Database Machine, SThree achieved the stability and scalability it needed to support its growth targets. Further enhancements to the organization’s core systems include a planned upgrade for Siebel Contact Center and improved integration with Oracle Fusion Middleware.

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  • Assuming "clean code/architecture" is there a difference in "effort" between PHP or Java/J2EE web application development?

    - by PhD
    A client asked us to estimate effort when selecting PHP as the implementation language for his next web-based application. We spent about a week exploring PHP, prototyping, testing etc., We are quite new to this language - may have hacked around it in the past but, let's go with PHP-noobs but application development experts (for the lack of a better, less flattering word :) It seems, that if we write, clean maintainable code, follow separation of concerns, enterprise architecture patters (DAOs etc.) the 'effort' in creating an object-oriented PHP based web-application seems to be the same for a Java based one. Here's our equation for estimating the effort (development/delivery time): ConstructionEffort = f(analysis, design, coding, testing, review, deployment) We were specifically comparing effort estimates in creating an enterprise application with the following: PHP + CakePHP/CodeIgniter (should we have considered others?) Java + Spring + Restlet It's an end-to-end application: Client: Javascript/jQuery + HTML/CSS Middle tier/Business Logic - (Still evaluating PHP/Java) Database: MySQL The effort estimates of the 1st and 3rd tier are constant and relatively independent of the middle tier's technology. At a high level with an initial breakdown into user stories of the requested features as well as a high-level SWAG on the sheer number of classes/SLOC that would be required for PHP doesn't seem to differ by much from what is required of the same in Java. Is this correct? We are basing our initial estimates on the initial prototyping/coding we've done with PHP - we are currently disregarding fluency with the language as a factor, since that'll be an initial hurdle and not a long term impediment IMHO (we also have sufficient time to become quite fluent with PHP). I'm interested in knowing the programmers' perspective with respect to effort when creating similar applications with either of the languages to justify choosing one over the other. Are we missing something here? It seems we are going against popular belief of PHP being quicker to market (or we being very fluent with Java have our vision clouded). It doesn't seem to have any coding/programming effort saving from what we/ve played around with.

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  • PrestaShop install SQL error

    - by Steve
    I am trying to install PrestaShop 1.4.0.17, and reach Step 3. I enter database information, which tests okay, and I choose the second option: Full mode: includes 100+ additional modules and demo products (FREE too!). I choose Next, and receive the error: Error while inserting data in the database: ‘CREATE TABLE `shop_county_zip_code` ( `id_county` INT NOT NULL , `from_zip_code` INT NOT NULL , `to_zip_code` INT NOT NULL , PRIMARY KEY ( `id_county` , `from_zip_code` , `to_zip_code` ) ) ENGINE=’ You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near \’\’ at line 6(Error: : 1064) This happens if I use either MyISAM, or InnoDB. Why is this happening? This also happens if I drop all database tables, and try again in simple mode. Is there a manual installation method?

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  • Introducing Sreelatha Doma, Guest Author

    - by Steven Chan
    I'm very pleased to welcome Sreelatha Doma to this blog's panel of guest authors.  Sreelatha Doma is a Principal Engineer - Database Administration in the Oracle Applications Technology Integration team, with a current focus on database technology.  She has been with Oracle since October 2005.  She was an EBS technology stack certification engineer for four years, and was involved in various technology product certifications for databases, RAC, browsers, Forms and middleware products. Prior to joining Oracle, she worked as a database administrator and Senior Technical Officer in Electronics and Communications India Limited (ECIL) and the Department of Atomic Energy.  She started her career as a software developer. Sreelatha has been in in the IT industry for over 13 years, and holds a B.Tech in Computer Science and Engineering.

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  • What is a Windows text editor that will make it easy for me to have four text files open onscreen at once?

    - by Ascendant
    When brainstorming / planning I like to have four text files open onscreen at once: One for notes/stream of consciousness, one for action items to follow up on, one for a rough outline, etc.... What I'm looking for is an easy way to create / save four text files in this manner in Windows. Most importantly, I need the lines to wrap based on the width of the actual window itself. Not based on a ruler or document size (a la Word or WordPad) and not wrapping "manually only" (like Windows' built in Notepad application.) Also, I need the windows to have no, or at least, little, fluff at the top of each document (menubars, ribbons, etc.) On my Mac, I've found that the built-in TextEdit application is almost perfect for this. There's no header or ribbon taking up space for each document, and lines wrap when they hit the end of the window. I haven't had any luck finding a Windows application that works the same way.

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  • Develop in trunk and then branch off, or in release branch and then merge back?

    - by Torben Gundtofte-Bruun
    Say that we've decided on following a "release-based" branching strategy, so we'll have a branch for each release, and we can add maintenance updates as sub-branches from those. Does it matter whether we: develop and stabilize a new release in the trunk and then "save" that state in a new release branch; or first create that release branch and only merge into the trunk when the branch is stable? I find the former to be easier to deal with (less merging necessary), especially when we don't develop on multiple upcoming releases at the same time. Under normal circumstances we would all be working on the trunk, and only work on released branches if there are bugs to fix. What is the trunk actually used for in the latter approach? It seems to be almost obsolete, because I could create a future release branch based on the most recent released branch rather than from the trunk. Details based on comment below: Our product consists of a base platform and a number of modules on top; each is developed and even distributed separately from each other. Most team members work on several of these areas, so there's partial overlap between people. We generally work only on 1 future release and not at all on existing releases. One or two might work on a bugfix for an existing release for short periods of time. Our work isn't compiled and it's a mix of Unix shell scripts, XML configuration files, SQL packages, and more -- so there's no way to have push-button builds that can be tested. That's done manually, which is a bit laborious. A release cycle is typically half a year or more for the base platform; often 1 month for the modules.

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  • links for 2011-02-15

    - by Bob Rhubart
    Why the hybrid cloud model is the best approach | Cloud Computing - InfoWorld Although some cloud providers look at the hybrid model as blasphemy, there are strong reasons for them to adopt it, says David Linthicum.  (tags: davidlinthicum cloud) Exadata Part V: Monitoring with Database Control The Oracle Instructor Uwe Hesse shows how "we can use Oracle Enterprise Manager Database Control to monitor an Exadata Database Machine, especially the Storage Servers (Cells). " (tags: oracle exadata) ATG Live Webcast Feb. 24th: Using the EBS 12 SOA Adapter (Oracle E-Business Suite Technology) "This live one-hour webcast will offer a review of the Service Oriented Architecture (SOA) capabilities within E-Business Suite R12 focusing on the E-Business Suite Adapter." (tags: oracle soa) Oracle Forms Migration to ADF - Webinar vom ORACLE Partner PITSS (Oracle Fusion Middleware für den Finanzsektor) "Join Oracle's Grant Ronald and PITSS to see a software architecture comparison of Oracle Forms and ADF and a live step-by-step presentation on how to achieve a successful migration." (tags: oracle adf)

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  • Friday tips #2

    - by Chris Kawalek
    Welcome to our second Friday tips blog! You can ask us questions using the hash tag #AskOracleVirtualization on Twitter and we'll do our best to answer them. Today we've got a VDI related question on linked clones: Question: I want to use linked clones with Oracle Virtual Desktop Infrastructure. What are my options? Answer by John Renko, Consulting Developer, Oracle: First, linked clones are available with the Oracle VirtualBox hypervisor only. Second, your choice of storage will affect the rest of your architecture. If you are using a SAN presenting ISCSI LUNS, you can have linked clones with a Oracle Enterprise Linux based hypervisor running VirtualBox. OEL will use OCFS2 to allow VirtualBox to create the linked clones. Because of the OCFS2 requirement, a Solaris based VirtualBox hypervisor will not be able to support linked clones on remote ISCSI storage. If you using the local storage option on your hypervisors, you will have linked clones with Solaris or Linux based hypervisors running VirtualBox. In all cases, Oracle Virtual Desktop Infrastructure makes the right selection for creating clones - sparse or linked - behind the scenes. Plan your architecture accordingly if you want to ensure you have the higher performing linked clones.

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  • PHP Runs Very Slow on IIS7. Need Help optimizing our config

    - by Kendor
    Am running a PHP based web app on our Windows 2008 cloud-based server. The app, which runs fine outside of our environment (e.g. a different IIS server), but is VERY slow in our environment. Based on googling this is a relatively common situation. I installed PHP and MySQL via the IIS web deployment method... Here's our setup: Windows 2008 Server Enterprise SP2 (32-bit) Microsoft-IIS/7.0 MySQL client version: mysqlnd 5.0.8-dev - 20102224 $Revision: 321634 $ PHP extension: mysqli Update for IIS 7.0 FastCGI Windows Cache Extension 1.1 for PHP 5.3 I had read elsewhere that ipv6 might be an issue, so I turned this off on the network adapter. The app is using: localhost as its connection Be easy on me, as I'm a bit green about some of these components... Also, rewriting the PHP app or modifying it is NOT an option. I'm reasonably SURE that our config is the issue.

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  • Type Conversion in JPA 2.1

    - by delabassee
    The Java Persistence 2.1 specification (JSR 338) adds support for various new features such as schema generation, stored procedure invocation, use of entity graphs in queries and find operations, unsynchronized persistence contexts, injection into entity listener classes, etc. JPA 2.1 also add support for Type Conversion methods, sometime called Type Converter. This new facility let developers specify methods to convert between the entity attribute representation and the database representation for attributes of basic types. For additional details on Type Conversion, you can check the JSR 338 Specification and its corresponding JPA 2.1 Javadocs. In addition, you can also check those 2 articles. The first article ('How to implement a Type Converter') gives a short overview on Type Conversion while the second article ('How to use a JPA Type Converter to encrypt your data') implements a simple use-case (encrypting data) to illustrate Type Conversion. Mission critical applications would probably rely on transparent database encryption facilities provided by the database but that's not the point here, this use-case is easy enough to illustrate JPA 2.1 Type Conversion.

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